Privilege Escalation Vulnerability in Keycloak by Red Hat
CVE-2026-3121

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak 26.4
Red Hat Build Of Keycloak 26.4.11
Red Hat Jboss Enterprise Application Platform 8
Red Hat Jboss Enterprise Application Platform Expansion Pack
Vendor
CVE Published:
26 March 2026

What is CVE-2026-3121?

A misconfiguration within Keycloak could allow administrators with the 'manage-clients' permission to exploit this flaw, equating it mistakenly to 'manage-permissions'. This situation enables unauthorized privilege escalation, granting access to roles, users, and other critical administrative tasks within the realm, particularly when admin permissions are activated at the realm level.

Affected Version(s)

Red Hat build of Keycloak 26.4 26.4.11-1

Red Hat build of Keycloak 26.4 26.4-14

Red Hat build of Keycloak 26.4 26.4-14

References

https://access.redhat.com/errata/RHSA-2026:6477
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6478
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-3121
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.